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nrf: utime: Add localtime and mktime calls 

Currently the nrf port doesn't implement a proper RTC (it exposes
raw RTCounters instead) but it is still useful to implement
localtime() and mktime() (although the argument to localtime becomes
mandatory).
pull/1/head
Daniel Thompson 2020-02-19 19:29:17 +00:00
parent a982035fdf
commit 2e5cb3eb32
1 changed files with 55 additions and 0 deletions
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55
ports/nrf/modules/utime/modutime.c
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@ -30,6 +30,7 @@
#include "py/nlr.h"
#include "py/smallint.h"
#include "py/obj.h"
#include "lib/timeutils/timeutils.h"
#include "extmod/utime_mphal.h"
/// \module time - time related functions
@ -37,9 +38,63 @@
/// The `time` module provides functions for getting the current time and date,
/// and for sleeping.
/// \function localtime(secs)
/// Convert a time expressed in seconds since Jan 1, 2000 into an 8-tuple which
/// contains: (year, month, mday, hour, minute, second, weekday, yearday)
/// year includes the century (for example 2014)
/// month is 1-12
/// mday is 1-31
/// hour is 0-23
/// minute is 0-59
/// second is 0-59
/// weekday is 0-6 for Mon-Sun.
/// yearday is 1-366
STATIC mp_obj_t mp_utime_localtime(mp_obj_t secs) {
mp_int_t seconds = mp_obj_get_int(secs);
timeutils_struct_time_t tm;
timeutils_seconds_since_2000_to_struct_time(seconds, &tm);
mp_obj_t tuple[8] = {
tuple[0] = mp_obj_new_int(tm.tm_year),
tuple[1] = mp_obj_new_int(tm.tm_mon),
tuple[2] = mp_obj_new_int(tm.tm_mday),
tuple[3] = mp_obj_new_int(tm.tm_hour),
tuple[4] = mp_obj_new_int(tm.tm_min),
tuple[5] = mp_obj_new_int(tm.tm_sec),
tuple[6] = mp_obj_new_int(tm.tm_wday),
tuple[7] = mp_obj_new_int(tm.tm_yday),
};
return mp_obj_new_tuple(8, tuple);
}
MP_DEFINE_CONST_FUN_OBJ_1(mp_utime_localtime_obj, mp_utime_localtime);
/// \function mktime()
/// This is inverse function of localtime. It's argument is a full 8-tuple
/// which expresses a time as per localtime. It returns an integer which is
/// the number of seconds since Jan 1, 2000.
STATIC mp_obj_t mp_utime_mktime(mp_obj_t tuple) {
size_t len;
mp_obj_t *elem;
mp_obj_get_array(tuple, &len, &elem);
// localtime generates a tuple of len 8. CPython uses 9, so we accept both.
if (len < 8 || len > 9) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError, "mktime needs a tuple of length 8 or 9 (%d given)", len));
}
return mp_obj_new_int_from_uint(timeutils_mktime(mp_obj_get_int(elem[0]),
mp_obj_get_int(elem[1]), mp_obj_get_int(elem[2]), mp_obj_get_int(elem[3]),
mp_obj_get_int(elem[4]), mp_obj_get_int(elem[5])));
}
MP_DEFINE_CONST_FUN_OBJ_1(mp_utime_mktime_obj, mp_utime_mktime);
STATIC const mp_rom_map_elem_t time_module_globals_table[] = {
{ MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_utime) },
{ MP_ROM_QSTR(MP_QSTR_localtime), MP_ROM_PTR(&mp_utime_localtime_obj) },
{ MP_ROM_QSTR(MP_QSTR_mktime), MP_ROM_PTR(&mp_utime_mktime_obj) },
{ MP_ROM_QSTR(MP_QSTR_sleep), MP_ROM_PTR(&mp_utime_sleep_obj) },
{ MP_ROM_QSTR(MP_QSTR_sleep_ms), MP_ROM_PTR(&mp_utime_sleep_ms_obj) },
{ MP_ROM_QSTR(MP_QSTR_sleep_us), MP_ROM_PTR(&mp_utime_sleep_us_obj) },